ROCHESTER, Minn. — Mayo Clinic has received a $75 million gift for a new logistics center. The building will be in the downtown Mayo complex and be named to honor the Grainger family .The family’s fortune is from the Chicago -based Grainger industrial supply giant. The family has been a Mayo benefactor through four generations Mayo said the Grainger facility will use artificial intelligence to track and update supplies. Robot vehicles will do deliveries through underground tunnels.

Grainger Building. The new logistics hub will be at the former Lourdes High School site.